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TROUBLESHOOTING
Start
Is the confirming sound of
the valve operation heard when
Ice maker(F) test switch pushed?
Does Main PCB MICOM
#58 have high (5V)output?
Does Main PCB IC72
#18 have about 0.7V
output?
Is the contact point of main
PCB RELAY RY76 normal?
MAIN PCB normal
-- Need to check the other parts
① Check the wire between Ice
water valve↔MAIN PCB
② Ice water valve itself has trouble
or bad contact of connector
③ Check the connection hose
Normal(Check Ice
water valve hose)
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB
Typical PCB Ground REG1 Heater Sink
☞ Checking method of voltage Based on
PCB typical Ground REG1 Heater Sink
1) Check the voltage of IC72#1(same voltage
as IC01#58)
- ICE Water valve operating (about 5V±0.5V)
Based on PCB typical Ground REG1 Heater Sink
2) IC72 #18 voltage
- ICE Water valve Waiting (about 13V±0.8V)
- ICE Water valve operating (about 0.7V±0.5V)
3) Check the voltage of Fridge Ice Water Valve
operating(AC voltage)
=> For checking the Relay RY76
CN70-"9"(Red) ↔ CN72-"5"(Brown)
- ICE Water valve waiting (about AC 0V)
- ICE Water valve operating (about AC 115V ± 20%)
2) Freeze Ice Water valve(Dual Ice Maker)
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